Device for detecting air tightness of aluminum alloy die casting

Abstract

The utility model provides a device for detecting air tightness of an aluminum alloy die casting, which relates to the technical field of air tightness detection and comprises a cylinder, a placing cavity and a lifting cavity are arranged in the cylinder, and first screws are rotatably arranged on the inner wall of the bottom of the placing cavity and close to two sides through bearings. The surface of the first screw rod is sleeved with and in threaded connection with limiting blocks, and a lifting disc is fixed between the limiting blocks. When the air tightness of a casting is detected to be unqualified, a second motor drives a second screw rod to rotate through a third gear and a fourth gear, the second screw rod rotates to drive a convex disc to descend through a limiting piece, an arc plate is pushed through an electric push rod, and the effect that the arc plate pushes the casting on the top of the convex disc to be discharged from a piece outlet hole can be achieved; and the qualified castings can be taken down from the convex disc after being qualified, so that the effect of conveniently classifying the qualified or unqualified castings can be achieved, and the effect of improving the detection efficiency can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to a device for detecting the air tightness of aluminum alloy die castings. Background Art

[0002] In industrial production, many castings are needed. As the requirements continue to increase, the quality requirements for these castings are also constantly increasing. Among them, the air tightness of the castings is one of the important indicators to measure its quality.

[0003] Existing die-casting air tightness detection devices usually require manual judgment on whether the die-casting air tightness is qualified, and classify the tested die-castings into qualified and unqualified ones, which is rather troublesome and easily affects the detection efficiency. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the air tightness detection device for die-castings usually requires manual judgment on whether the air tightness of the die-castings is qualified, and the die-castings after detection are classified into qualified and unqualified, which is rather troublesome and easily affects the detection efficiency. A device for detecting the air tightness of aluminum alloy die-castings is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for detecting the air tightness of aluminum alloy die castings, comprising a cylinder, a placement cavity and a lifting cavity are provided inside the cylinder, a first screw is rotated on the bottom inner wall of the placement cavity and near both sides, a limit block is sleeved on the surface of the first screw and threadedly connected, a lifting plate is fixed between the limit blocks, a pressure gauge is fixed on the top of the lifting plate and connected, a limit groove is symmetrically provided on the inner wall of the lifting cavity, a second screw is bearingly connected on the top inner wall of the limit groove, a limit piece is sleeved on the surface of the second screw and threadedly connected, a convex disk is provided at the connection between the placement cavity and the lifting cavity, the convex disk is fixedly connected to the limit piece, a connecting pipe is fixedly penetrated and fixed at the center of the convex disk, the bottom of the connecting pipe is fixedly connected and connected to an air pump, an arc plate is embedded in the inner wall of one side of the lifting cavity, an electric push rod is penetrated on the surface of the cylinder, the output end of the electric push rod is fixedly connected to the arc plate, and an outlet hole is provided on the inner wall of the lifting cavity.

[0006] Preferably, support columns are fixedly connected to the bottom of the cylinder and close to the edge at equal intervals, and support blocks are fixedly connected to the bottoms of the support columns.

[0007] Preferably, a resisting block is sleeved and rotatably arranged on the surface of the first screw and above the limiting block, and the resisting block is fixedly connected to the inner wall of the placement cavity.

[0008] Preferably, a first circular cavity and a second circular cavity are respectively provided above the placement cavity and below the lifting cavity, a first gear and a second gear are provided inside the first circular cavity, a third gear and a fourth gear are provided inside the second circular cavity, and the first gear and the third gear are respectively meshed and connected with the second gear and the fourth gear.

[0009] Preferably, the top of the first screw rod passes through the inner wall of the top of the placement cavity and extends into the first circular cavity and is fixedly connected to the second gear, the bottom of the second screw rod passes through the lifting cavity and extends into the second circular cavity and is fixedly connected to the fourth gear, the top and bottom of the cylinder are respectively fixed with the first motor and the second motor, and the output ends of the first motor and the second motor both pass through the cylinder and are fixedly connected to the first gear and the third gear, respectively.

[0010] Preferably, the top of the convex plate and the bottom of the lifting plate are both fixedly connected with sealing gaskets.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, when the air tightness of the casting is detected to be unqualified, the second motor drives the second screw to rotate through the third gear and the fourth gear, and the second screw rotates to drive the convex plate to descend through the limiter. At this time, the electric push rod pushes the arc plate, which can make the arc plate push the casting on the top of the convex plate to be discharged from the outlet hole. After passing the test, the qualified casting can be removed from the convex plate, so as to facilitate the classification of qualified or unqualified castings, thereby improving the detection efficiency.

[0013] 2. In the utility model, by placing the cylindrical casting on the convex plate, the first motor drives the first screw to rotate through the first gear and the second gear, and the rotation of the first screw drives the lifting plate to descend, so that the convex plate and the lifting plate can squeeze the two ends of the cylindrical casting, so that the cylindrical castings of different heights and different diameters can be detected, thereby improving the practicality of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a three-dimensional diagram of the overall structure of a device for detecting the air tightness of aluminum alloy die castings;

[0015] Figure 2 The utility model provides a cross-sectional view of the overall structure of a device for detecting the air tightness of aluminum alloy die castings;

[0016] Figure 3 The utility model provides a vertical cross-sectional view of the overall structure of a device for detecting the air tightness of aluminum alloy die castings;

[0017] Figure 4The utility model provides a partial structural stereogram of a device for detecting the air tightness of aluminum alloy die castings.

[0018] Legend: 1. Cylinder; 2. Support column; 3. Support block; 4. Placement cavity; 5. First circular cavity; 6. First gear; 7. Second gear; 8. First screw; 9. Lifting plate; 10. Limit block; 11. Resistance block; 12. Pressure gauge; 13. First motor; 14. Lifting cavity; 15. Outlet hole; 16. Convex plate; 17. Limit groove; 18. Second screw; 19. Limit piece; 20. Sealing gasket; 21. Connecting pipe; 22. Air pump; 23. Second circular cavity; 24. Third gear; 25. Fourth gear; 26. Second motor; 27. Electric push rod; 28. Arc plate. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment 1, as Figure 1-4 As shown, the utility model provides a device for detecting the air tightness of aluminum alloy die castings, including a cylinder 1, a placement cavity 4 and a lifting cavity 14 are provided inside the cylinder 1, a first screw 8 is rotatably provided on the bottom inner wall of the placement cavity 4 and near both sides, a limiting block 10 is sleeved on the surface of the first screw 8 and threadedly connected, a lifting plate 9 is fixed between the limiting blocks 10, a pressure gauge 12 is fixed on the top of the lifting plate 9 and connected, a limiting groove 17 is symmetrically provided on the inner wall of the lifting cavity 14, and a first screw 8 is rotatably provided on the top inner wall of the limiting groove 17 and is connected to a first screw 8 on the bottom inner wall of the placement cavity 4 and near both sides, a limiting block 10 is sleeved on the surface of the first screw 8 and threadedly connected, a lifting plate 9 is fixed between the limiting blocks 10, a pressure gauge 12 is fixed on the top of the lifting plate 9 and connected to the first screw 8, a limiting groove 17 is symmetrically provided on the inner wall of the limiting groove 17, and a first screw 8 is rotatably provided on the top inner wall of the limiting groove 17 and is connected to a first screw 8 on the bottom inner wall of the first screw 8 ... Two screws 18, the surface of the second screw 18 is sleeved and threadedly connected with a limiting member 19, a convex disk 16 is provided at the connection between the placement chamber 4 and the lifting chamber 14, the convex disk 16 is fixedly connected to the limiting member 19, a connecting pipe 21 is fixedly penetrated at the center of the convex disk 16, the bottom of the connecting pipe 21 is fixed and connected to an air pump 22, an arc plate 28 is embedded in the inner wall of one side of the lifting chamber 14, an electric push rod 27 is penetrated on the surface of the cylinder 1, the output end of the electric push rod 27 is fixedly connected to the arc plate 28, and an outlet hole 15 is opened on the inner wall of the lifting chamber 14.

[0022] The effect achieved by the entire embodiment 1 is that a placement cavity 4 and a lifting cavity 14 are opened inside the cylinder 1, and a first screw 8 is rotatably arranged on the bottom inner wall of the placement cavity 4 and near both sides, and a limiting block 10 is sleeved on the surface of the first screw 8 and threadedly connected, and a lifting disk 9 is fixed between the limiting blocks 10, which can make the first screw 8 rotate the limiting block 10 to lift, and the lifting of the limiting block 10 drives the lifting disk 9 to lift, and a barometer 12 is fixed and connected to the top of the lifting disk 9, which can detect the air pressure inside the cylindrical casting, and a limiting groove 17 is symmetrically opened on the inner wall of the lifting cavity 14, and a second screw 18 is connected to the top inner wall of the limiting groove 17 by a bearing, and a limiting piece 19 is sleeved on the surface of the second screw 18 and threadedly connected, so that the pressure inside the cylindrical casting can be detected. A convex disk 16 is provided at the connection between the placement cavity 4 and the lifting cavity 14. The convex disk 16 is fixedly connected to the limit member 19, which can make the second screw 18 rotate to drive the limit member 19 to rise and fall, and the limit member 19 rises and falls to drive the convex disk 16 to rise and fall. A connecting pipe 21 is fixedly passed through the center of the convex disk 16, and the bottom of the connecting pipe 21 is fixed and connected to an air pump 22, which can make the air pump 22 inject gas into the interior of the die-casting through the connecting pipe 21. An arc plate 28 is embedded in the inner wall of one side of the lifting cavity 14, and an electric push rod 27 is passed through the surface of the cylinder 1. The output end of the electric push rod 27 is fixedly connected to the arc plate 28. The inner wall of the lifting cavity 14 is provided with an outlet hole 15, which can make the electric push rod 27 push the die-casting and discharge it from the outlet hole 15.

[0023] Embodiment 2, as Figure 1-4 As shown, the bottom of the cylinder 1 and near the edge are fixedly connected with support columns 2 at equal intervals, and the bottoms of the support columns 2 are fixedly connected with support blocks 3; the surface of the first screw 8 and above the limit block 10 are sleeved and rotated with a resistance block 11, and the resistance block 11 is fixedly connected to the inner wall of the placement cavity 4; the first circular cavity 5 and the second circular cavity 23 are respectively opened above the placement cavity 4 and below the lifting cavity 14, the first circular cavity 5 is provided with a first gear 6 and a second gear 7, and the second circular cavity 23 is provided with a third gear 24 and a fourth gear 25, the first gear 6 and the third gear 24 are respectively connected to the second gear 25, and the first gear 6 and the third gear 24 are connected to the second gear 25. The wheel 7 is meshed with the fourth gear 25; the top of the first screw rod 8 passes through the top inner wall of the placement cavity 4 and extends to the first circular cavity 5 and is fixedly connected to the second gear 7; the bottom of the second screw rod 18 passes through the lifting cavity 14 and extends to the second circular cavity 23 and is fixedly connected to the fourth gear 25; the top and bottom of the cylinder 1 are respectively fixed with the first motor 13 and the second motor 26; the output ends of the first motor 13 and the second motor 26 both pass through the cylinder 1 and are respectively fixedly connected to the first gear 6 and the third gear 24; the top of the convex plate 16 and the bottom of the lifting plate 9 are fixedly connected with a sealing gasket 20.

[0024] The effect achieved by the entire embodiment 2 is that the support columns 2 are fixedly connected through the bottom of the cylinder 1 and near the edge at equal intervals, and the bottoms of the support columns 2 are fixedly connected with support blocks 3, which can play the effect of supporting the bottom of the cylinder 1; a resistance block 11 is sleeved and rotated through the surface of the first screw 8 and located above the limit block 10, and the resistance block 11 is fixedly connected to the inner wall of the placement cavity 4, which can prevent the lifting plate 9 from rising and damaging the barometer 12; a first circular cavity 5 and a second circular cavity 23 are respectively opened above the placement cavity 4 and below the lifting cavity 14, a first gear 6 and a second gear 7 are arranged inside the first circular cavity 5, and a third gear 24 and a fourth gear 25 are arranged inside the second circular cavity 23, the first gear 6 and the third gear 24 are respectively meshed and connected with the second gear 7 and the fourth gear 25, which can play the effect of making the first gear 6 and the third gear 24 drive the second gear 7 and the fourth gear 25 to mesh and connect respectively; through the first The top of the screw 8 passes through the top inner wall of the placement chamber 4 and extends into the first circular chamber 5 and is fixedly connected to the second gear 7. The bottom of the second screw 18 passes through the lifting chamber 14 and extends into the second circular chamber 23 and is fixedly connected to the fourth gear 25. The top and bottom of the cylinder 1 are respectively fixed with the first motor 13 and the second motor 26. The output ends of the first motor 13 and the second motor 26 both pass through the cylinder 1 and are respectively fixedly connected to the first gear 6 and the third gear 24, which can achieve the effect of enabling the first motor 13 and the second motor 26 to respectively drive the first gear 6 and the third gear 24 to rotate. At this time, the rotation of the first gear 6 and the third gear 24 will drive the second gear 7 and the fourth gear 25 to rotate, and the rotation of the second gear 7 and the fourth gear 25 will drive the first screw 8 and the second screw 18 to rotate; the sealing gasket 20 is fixedly connected to the top of the convex plate 16 and the bottom of the lifting plate 9, which can achieve the effect of sealing both ends of the cylindrical casting.

[0025] Working principle: By placing the cylindrical casting on the convex plate 16, the first gear 6 driven by the first motor 13 rotates, the first gear 6 rotates to drive the second gear 7 to rotate, the second gear 7 rotates to drive the first screw 8 to rotate, the first screw 8 rotates to drive the limit block 10 to descend, the limit block 10 descends and drives the lifting plate 9 to descend, so that the cylindrical casting can be clamped, and the gas is injected into the inside of the cylindrical casting through the connecting pipe 21 through the air pump 22. At this time, the barometer 12 can detect the air pressure inside the cylindrical casting. When the air pressure drops, it means that the air tightness of the cylindrical casting is unqualified. The third gear 24 can be driven to rotate by the second motor 26, and the rotation of the third gear 24 drives the fourth gear 25 to rotate, and the rotation of the fourth gear 25 drives the second screw 18 to rotate. The rotation of the second screw 18 drives the convex plate 16 to descend through the limiter 19. At this time, the arc plate 28 is pushed by the electric push rod 27, so that the arc plate 28 can push the top casting of the convex plate 16 to be discharged from the outlet hole 15. After passing the test, the qualified casting can be removed from the convex plate 16, so as to facilitate the classification of qualified or unqualified castings, thereby improving the detection efficiency.

[0026] The wiring diagram of the barometer 12, the first motor 13, the air pump 22, the second motor 26 and the electric push rod 27 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the barometer 12, the first motor 13, the air pump 22, the second motor 26 and the electric push rod 27 are no longer explained in detail.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for detecting the air tightness of an aluminum alloy die casting, comprising a cylinder (1), characterized in that: The cylinder (1) is provided with a placement chamber (4) and a lifting chamber (14) inside. A first screw (8) is rotatably provided on the bottom inner wall of the placement chamber (4) and near both sides. A limit block (10) is sleeved on the surface of the first screw (8) and is threadedly connected. A lifting plate (9) is fixed between the limit blocks (10). A pressure gauge (12) is fixed on the top of the lifting plate (9) and is connected to the air pressure gauge (12). The inner wall of the lifting chamber (14) is symmetrically provided with limit grooves (17). The inner wall of the top of the limit groove (17) is bearing-connected with a second screw (18). The surface of the second screw (18) is sleeved and threadedly connected. A limit piece (19) is connected with a groove, a convex plate (16) is provided at the connection point between the placement cavity (4) and the lifting cavity (14), the convex plate (16) is fixedly connected to the limit piece (19), a connecting pipe (21) is fixedly passed through the center of the convex plate (16), the bottom of the connecting pipe (21) is fixedly connected to an air pump (22), an arc plate (28) is embedded in the inner wall of one side of the lifting cavity (14), an electric push rod (27) is passed through the surface of the cylinder (1), the output end of the electric push rod (27) is fixedly connected to the arc plate (28), and an outlet hole (15) is opened on the inner wall of the lifting cavity (14).

2. The device for detecting air tightness of aluminum alloy die castings according to claim 1, characterized in that: Support columns (2) are fixedly connected at equal intervals at the bottom of the cylinder (1) and close to the edge, and support blocks (3) are fixedly connected at the bottom of each of the support columns (2).

3. The device for detecting air tightness of aluminum alloy die castings according to claim 1, characterized in that: A resisting block (11) is sleeved and rotatably mounted on the surface of the first screw rod (8) and located above the limiting block (10), and the resisting block (11) is fixedly connected to the inner wall of the placement cavity (4).

4. The device for detecting air tightness of aluminum alloy die castings according to claim 1, characterized in that: A first circular cavity (5) and a second circular cavity (23) are respectively provided above the placement cavity (4) and below the lifting cavity (14); a first gear (6) and a second gear (7) are provided inside the first circular cavity (5); a third gear (24) and a fourth gear (25) are provided inside the second circular cavity (23); the first gear (6) and the third gear (24) are respectively meshed and connected with the second gear (7) and the fourth gear (25).

5. The device for detecting air tightness of aluminum alloy die castings according to claim 4, characterized in that: The top of the first screw rod (8) passes through the top inner wall of the placement chamber (4) and extends into the first circular chamber (5) to be fixedly connected to the second gear (7); the bottom of the second screw rod (18) passes through the lifting chamber (14) and extends into the second circular chamber (23) to be fixedly connected to the fourth gear (25); the top and bottom of the cylinder (1) are respectively fixed with a first motor (13) and a second motor (26); the output ends of the first motor (13) and the second motor (26) both pass through the cylinder (1) and are respectively fixedly connected to the first gear (6) and the third gear (24).

6. The device for detecting air tightness of aluminum alloy die castings according to claim 1, characterized in that: The top of the convex plate (16) and the bottom of the lifting plate (9) are both fixedly connected with a sealing gasket (20).

Images